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  2. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_algorithm

    Luhn algorithm. The Luhn algorithm or Luhn formula, also known as the " modulus 10" or "mod 10" algorithm, named after its creator, IBM scientist Hans Peter Luhn, is a simple check digit formula used to validate a variety of identification numbers. It is described in US patent 2950048A, granted on 23 August 1960. [ 1]

  3. Modular arithmetic - Wikipedia

    en.wikipedia.org/wiki/Modular_arithmetic

    Adding 4 hours to 9 o'clock gives 1 o'clock, since 13 is congruent to 1 modulo 12. In mathematics, modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" when reaching a certain value, called the modulus. The modern approach to modular arithmetic was developed by Carl Friedrich Gauss in his book Disquisitiones ...

  4. Modular multiplicative inverse - Wikipedia

    en.wikipedia.org/wiki/Modular_multiplicative_inverse

    Modular multiplicative inverse. In mathematics, particularly in the area of arithmetic, a modular multiplicative inverse of an integer a is an integer x such that the product ax is congruent to 1 with respect to the modulus m. [ 1] In the standard notation of modular arithmetic this congruence is written as.

  5. Microsoft Office - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Office

    Support for Office v. X ended on January 9, 2007, after the release of the final update, 10.1.9 [178] Office v.X includes Word X, Excel X, PowerPoint X, Entourage X, MSN Messenger for Mac and Windows Media Player 9 for Mac; it was the last version of Office for Mac to include Internet Explorer for Mac. [179]

  6. Modulo - Wikipedia

    en.wikipedia.org/wiki/Modulo

    The range of values for an integer modulo operation of n is 0 to n − 1 ( a mod 1 is always 0; a mod 0 is undefined, being a division by zero ). When exactly one of a or n is negative, the basic definition breaks down, and programming languages differ in how these values are defined.

  7. Modulo (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Modulo_(mathematics)

    Modulo is a mathematical jargon that was introduced into mathematics in the book Disquisitiones Arithmeticae by Carl Friedrich Gauss in 1801. [3] Given the integers a, b and n, the expression "a ≡ b (mod n)", pronounced "a is congruent to b modulo n", means that a − b is an integer multiple of n, or equivalently, a and b both share the same remainder when divided by n.

  8. List of file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_file_formats

    ME – Plain text document normally preceded by the word "READ" (READ.ME) MCW – Microsoft Word for Macintosh (versions 4.0–5.1) Mobi – Mobipocket documents; NB – Mathematica Notebook; nb – Nota Bene Document (Academic Writing Software) NBP – Mathematica Player Notebook

  9. Template:Modulo - Wikipedia

    en.wikipedia.org/wiki/Template:Modulo

    Shortcut. { { mod }} Implements the mathematical modulo operator. The returned result is always of the same sign as the modulus or nul, and its absolute value is lower than the absolute value of the modulus. However, this template returns 0 if the modulus is nul (this template should never return a division by zero error).